I think (IMO) that the same vitamins/ supplements which are used for general/ overall nerve health would be of benefit to you. vitamins that are good for nerve regeneration/ health are Omega 3/6 such as Fishoil,flaxseed oil, primrose oil. Also a multi B vitamin, B12, Vitamin D. I also take Magnesium and R-Lipoic Acid. On top there are stickies which list good vitamins $ supplements for nerves. You could do a search on the forum entering in the keyword 'radiation'. You might find a thread which may be of use to you and also locate other posters who have written their stories regarding radiation induced neuropathy, but may be absent from forum at this time.